1Surveyed occupations are classified into wagecategories based on the average wage for theoccupation, which may include workers with earningsboth above and below the threshold. The categorieswere formed using percentile estimates generated usingdata from the National Compensation Surveypublication, "Employer Costs for Employee<
/span>Compensation - March 2013."

NOTE: Because of rounding, sums of individual itemsmay not equal totals. For definitions of major plans, keyprovisions, and related terms, see the "Glossary ofEmployee Benefit Terms" atwww.bls.gov/ncs/ebs/glossary20122013.htm.